Machine for drilling wrench-bars.



A. L. MOORE. MACHINE FOR DRILLING WRENCH BARS.

APPLICATION FILED FEB. 2, 1910. 1,125,868. Pa nted an. 19, 1915.

. 5 SHEETS-SHBET 1. x a O Q I Q q lV/TNESSES: INVENTOR,

ATTORNEY.

H-IE NORRIS PETERS CO PHom urHou WASHINQTON. n. C.

A. L. MOORE. MACHINE FOR DRILLING WRENCH BARS.

Ru 11 9 1 9 1 1 H a J Q m n m a P 0 1 9 1 2' l E P D E L I N 0 I T A O IL P A 5 SHEETS-SHBET 2.

WITNESSES: gag

e I I [IV VENTOR, c/Ziiarl. Ma ra, L Y

f I .r I

ATTORNEY.

THE NORRIS PETERS co..PHOTO-L1THO., WASHINGTON. D c

Patented Jan. 19, 1915.

5 SHEETS-SHEET 3.

A. L. MOORE.

MAGHINEIOR DRILLING WRENCH BARS.

APPLICATION FILED FEB. 2. 1910.

LVVENTOR, UZY'Z /QZU'L M719,

WITNESSES.- Vi%@%-w W flflzf. I

ATTORNEY.

THE NORRIS PETERS CCL, PHOTC-LITHO WASHINGTON. D. C

A. L. MOORE. MACHINE FOR DRILLING WRENCH BARS.

APPLICATION FILED PEB.2, 1910. 1, 1 25,868. Patented Jan. 19, 1915.

5 SHEETS-SHEET 4,

WITNESSES: v x

ATTORNEK A. L. MOORE.

MACHINE FOR DRILLING WRENCH BARS.

APPLICATION FILED FEB. 2. 1910.

Patented Jan. 19, 1915.

5 SHEETS-SHEET 5.

[N VENTOR, firixiarljlflaf, BY

A TTORNEY.

" 'rnn STATES PATENT OFFICE.

ARTHUR L. MOORE, F SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO MOORE DROPFORGING COMPANY, OF SPRINGFIELD, MASSACHUSETTS, A CORPORATION OF MAS-SACHUSETTS.

MACHINE FOR DRILLING WRENCH-BARS.

Specification of Letters Patent.

Patented Jan. 19, 1915.

of Hampden and State of Massachusetts,

all

have invented certain'new and useful Improvements in Machines forDrilling rench-Bars, of which the following is a full, clear, and exactdescription.

My invention relates to improvements in drilling machines and refersparticularly to a machine for drilling openings in wrench bars, and theleading object of my invention is the provision of a machine which will2 simultaneously drill three holes or openings in the bar of a wrench.

Another object of my invention is the provision of a machine fordrilling wrench bars which will simultaneously drill oneopeningvertically, one horizontally, and

one at an angle or incline with reference to the vertical and horizontalopenings as required and necessary, and which mechanism will be ofcomparatively simple construction and capable of easy control andmanipulation by the operator.

To attain the desired objects, my invention consists of a machine fordrilling openings in wrench bars comprising a vertically mounted drill,horizontally disposed drills, and means for simultaneously impartingvertical and horizontal movement to the set of drills and for revolvingsaid drills in the accomplishment of the drilling of the three openings.

The invention also consists of a drilling machine embodyingnovelfeatures of construction, combination and arrangement of parts forservice substantially as disclosed herein.

I have illustrated in the accompanying drawings what I believe to be thebest embodiment of my invention which I have thus far conceived, butwithin the scope of the claims numerous changes and modifications can beresorted to without sacrificing any of the advantages of my inventionand without departing from the spirit or scope of my improvements.

In the drawings: Figure 1 represents a top plan view of my completedrilling machine; Fig. 2 represents a front elevation of the machine;Fig. 3 represents an end elevation; Fig. 4 represents a plan view ofwhat I term the work holder or jig; Fig. 5 rep resents a side viewof thework holder or jig-taken from theright. Fig. 6 represents a rear view;Fig. 7 represents a sectional view on line 7 7 Fig. 1; Fig. 8 representsa perspective view of the wrench bar showing the vertical and horizontalor lateral openings as they appear when drilled with my machine. Figs. 9and 10 represent respectively a sectional view and perspective view ofthe work holder with wrench bar in position to be drilled.

Referring by numerals to the drawings, in which similar numerals ofreference designate corresponding parts in all of the views: The numeral1 designates the frame or supporting structure of my machine which isprovided with a horizontal bed or support 2, an upright or standard 3,formed with the yoke &, having the pair of shaft bearings 5 and thecross head 6 having the shaft hearing or sleeve 7, and from the crosshead extends the arm 8 provided with the vertical shaft bearing 9.Mounted in the cross head 6 isthe shaft 10 carrying the pair of pulleywheels one 11 of which is fast and the other 11 being loose on suchshaft, and partially around these pulleys passes the driving belt 12leading from a suitable source of power; and from these pulleys 11 thebelt passes over the pulley 13 which is splined on the spindle 1 1 sothat the spindle may slide in, but be rotated by, said pulley and theshaft 10 carries at one end the sprocket 15 and is provided with theuniversal joint 16 to which is connected the inclined short shaft 17carrying at its outer end the sprocket wheel 18, the hubs of thesprocket wheels being rigidly secured to the shafts 10 and 17 by meansof keys or screws 19, and from this construction it will be observedthat power being supplied through the driving belt to the pulleys thevertical spindle 14 and the horizontal shafts 10 and 17 aresimultaneously revolved and that the universal connection 16 permits theinclined shaft 17 to accommodate itself to the rotation of the shaft 10.From the sprocket wheels 15 and 18 leads respectively the sprocketchains 15 and 18 which engage the sprocket wheels 20 and 21 mounted onthe spindles 22 and 23 respectively, the spindles 22 and 23 beingarranged in a horizontal plane at a right angle to the vertical spindle14, and the horizontal spindle 23 is arranged at an incline withreference to the spindle 22; and it will be observed that the revolutionof the sprockets 15 and 18 through the medium of the chains 15 and 18imparts a revolution to the spindles and 23; and to insure the sprocketchains 15 and 18 being taut or under the proper tension at all times, Iprovide the pair of sprocket wheels 24 and 25 which have their hubs 26and 27 mounted on the studs 28 and 29 secured in the upper end of thearms 30 and 31; the lower ends of which have the studs 32 and 33 mountedin the brackets 34 and 35 secured to the bed plate 36, the said bedplate resting in the drip pan 37 supported upon the horizontal bed 2 ofthe frame or support. From this construction it will be understood thatwhen power is applied to the driving belt, the vertical shaft 14, thespindle 22 at a right angle thereto, and the spindle 23 at an incline tothe spindle 22 are all simultaneously revolved through the medium of thesprocket wheels and chains, and also that the tension devices retain thedriving chains at all times under the proper tension to insure areliable rotation of the three spindles named.

The pulley 13 is splined on the shaft 14 so that such shaft may slidethrough but be rotated by said pulley; and encircling the spindle belowthe pulley is a sleeve 40 which is slidably guided vertically throughthe bearing 38 of the arm secured to the frame. The sleeve is heldbetween collars 41 in abutment against the upper and lower ends thereof,such collars being fast to the spindle 14 and upon one side the sleevecarries a rack 43 which is in enga ement with a gear wheel 44 mounted onthe shaft 48 which revolves in the bearings 49 provided at the upper endof the standards or uprights 50. And upon said shaft 48 are thevertically disposed beveled pinions 51 which mesh with the horizontallydisposed bevel pinions 52 on the upper end of the pair of verticalshafts 53 mounted in the horizontal bearings 54 of the said standards oruprights 50.

To the lower ends of the pair of vertical shafts 53 are secured the pairof horizontally disposed bevel pinions 55 which mesh with the pair ofpinions 56 on the short shafts or studs 57 mounted in brackets 58secured to the bed plate of the machine. On the shafts 57 are securedthe clutches 59; and upon the outer ends of the said shafts 57 aresecured the gear wheels 60 which engage the rack bars 61 mounted on thesleeves 62 which are held upon the shafts 22 and 23, by the collars 64*,66 so that endwise movements of the sleeves cause corresponding endwisemovements to the shafts 22 and 23. The shafts are revolubly and slidablymounted in the uprights 64 secured to the bed 36 and the aforementionedsleeves 62 have sliding movements in the uprights 65 which are alsosupported by the bed of the machine. The rack bars 61 serve as keys toprevent the rotation of the sleeves 62 in the ways therefor through theuprights 65. The shafts 22 and 23 are splined through, and endwisemovable relatively to the sprocket wheels 20 and 21. Each of thespindles 22 and 23 carries a chuck 66 in which is mounted a drill 67,there thus being three drills, one vertical and two horizontal, thelatter two drills being at an angle to each other, as best seen in Fig.1; and the inner or collar portion 66 of the drill spindles at all timesabuts against the inner portion of the sliding sleeves. And upon theshaft 48 is secured a sleeve 68 pro vided with a hand operating lever69; and it will be understood that upon the depres sion of the lever 69,the shaft 48 is rotated, and simultaneously the drills 67 will be movedone vertically, and two thereof hori- Zontally in their inclinations toeach other in such a manner as to form the vertical opening 70, thehorizontal opening 71, and horizontal opening 72 inclined to opening 70in the wrench bar 73, as most clearly seen in Fig. 8.

In the drawings I have shown the shaft 23 at a certain angle, but itwill be understood that this angle may be changed as circumstancesdictate without involving the change of the construction of my machine,but by simply placing the parts at a different angle.

In order to cause the spindles 22 and 23 to revolve with little frictionand to insure a long wearing of the parts, I provide the ball bearing 79between the sleeves and the collars adjacent thereto which are affixedon the spindles.

From the foregoing description taken in connection with the drawings,the operation of my machine will be readily understood; and assuming thewrench bar to be in position upon the work holder as shown in Fig. 4 andthe three shafts carrying the drills revolving simultaneously, by moving,the hand lever downwardly the sleeves are moved toward the wrench barsimultaneously, and the drills simultaneously produce the openings 70,71. and 72, and upon the raising of the hand lever the parts arereturned to normal position, permitting the insertion of a new wrenchbar and repeating the operation; and in this manner the machine in arapid, efficient and practical manner produces the openings in thewrench bar as clearly seen in Fig. 8.

The wrench bar 73 after being operated upon as before stated, has theopening 71 in the shank of the bar on one side, the opening 72 upon oneside of the upper part below the j aw and at an incline, and thevertical through opening 70 on the opposite side of the bar and belowthe jaw; and the bar adjacent the opening 70 is formed with recessedportions 70 on each side, the general outline of the shoulderedportionbeing that of a guide 176, whichangled portions and the supportsare provided with hubs 7 6 of the same shape and fitting snugly in therecessed portions 70* of the wrench bar; and when the bar is in place.to be drilled it fits in the jig as shown inFigs. 9 and 10 with the heador Jjaw portion retained by the guide and hubs and one side of the barrests against the stop abutment 77 of the bed of the ig; and thispermits the easy insertion and removal of 1 tie barbut places it in thebest possible position to be drilled. andprevents accidental movement ordisplacement.

I claim 1. In a machine of the character described, the combination witha frame, a shaft mounted in said frame and consisting of two mem bers,arranged horizontally and the one member being at an angle to the other,a.

universal joint between said members, a pair of pulleys on one member ofsaid shaft, another pulley revoluble in a horizontal plane, a verticalspindle splined and slidable through the last named pulley, and carryinga drill, a horizontally disposed spindle, and a drill. carried by saidspindle, another spindle arranged in a horizontal plane and at anincline with reference to the first named horizontal spindle, adrill-carried by said spindle, means for imparting a sliding movement tothe said spindles, and means for simultaneously revolving the saidspindles.

2. I In a machine of the character described, the combination of aframe, a driving shaft consisting of two parts having a universal jointconnection, a sprocket wheel mounted on the ends of saidparts or members'of the shaft, two horizontal drill spindles arranged angularly to eachother, sprocket wheels 011 said horizontal drill spindles, and sprocketwheels on the universally jointed two part shaft, sprocket chainsconnecting pairs of the sprocket wheels, a vertical drill spindle,

means for rotatingboth the vertical drill spindle, and universallyjointed horizontal shaft, and means for s multaneously long1- tudinallyadvancing and retiring all. of the drill spindles.

3. In a machine. of the character described, the combination of theframe provided with a. horizontal bracket-like support,.a yoke extendedoppositely relativelyto the said support, and the cross head, havingaxlally horizontal journal bearings therein, the twopart shaft mountedin the cross head and yoke and carrying sprocket wheels at the outerends thereof, pulleys mounted on one part of said shaft, a verticalspindle journaled through said bracket-like support, a pulley on saidspindle, a belt passing over the said pulleys for revolving the twoparts of said shaft, means for raising and lowering said vertical drillspindle, a pair of horizontal drill spindles arranged on lines angularto each other, mounted for endwise movements, sprocket wheels splineengaged on said horizontal drill spindles, constrained againstaxialmovements, and through which the horizontal drill spindles are endwisemovable, sprocket chains in engagement around the first named sprocketwheels, and the drill spindle sprocket wheels, means operated by theraisin and lowering means for the vertical spind e simultaneouslyadvancing and retiring thehorizontal spindle, drills carried by saidspindles, and a holder for the work, in relation to which said ablyspline engaged, a pair of endwise movable drill spindles arranged in ahorizontal plane below said vertical drill spindle, a horizontal shafthaving a pair of pulleys thereon, a driving-belt having engagementsaround the aforenamed vertical spindle pulleys and around saidhorizontal shaft pulley, driving connections between said horizontalshaft and said horizontal drill spindles and means for simultaneouslyendwise advancing and retiring the vertical and the two horizontal drillspindles.

5. In a machine of the character described, in conbination, a worksupport, a vertical drill spindle, a frame supported arm through whichthe vertical spindle is guided, a pulley through which said spindle isslidably engaged, a pair of endwisemovable drill spindles arranged in ahorizontal plane below said vertical drill spindle, one of such spindlesbeing arranged longitudinally of j the machine, and the other arrangedincliningly thereto, a horizontal shaft having a pair of pulleysthereon, a driving belt having engagements around the aforenamedvertical spindle pulley and around said horizontal shaft pulleys,driving connections between said horizontal shaft and said horizontaldrill spindles and means for simultaneously endwise advancing andretiring the vertical and the two horizontal drill spindles.

6. In a machine of the character described, in combination, a verticaland a horizontal drill spindle, each having a sleeve through andrelatively to which the spindle is rotative but constrained againstmovement endwise relatively to the spindle and each sleeve having rackteeth thereon. and bearing and,

guiding means through which said sleeves are slidable, a rock shafthaving an operating handle and a pinion in mesh with the rack teeth ofthe vertical spindle sleeve, a horizontal shaft having a pinion in meshwith the rack teeth of the horizontal spindle sleeve, a vertical shaftextending between said rock shaft and said horizontal pinion providedshaft, and bevel-gear-connected at its upper and lower ends with saidshafts.

7. In a machine of the character described, in. combination, a verticaldrill spindle, a horizontal drill spindle arranged longitudinally of themachine, and another-horizontal drill spindle arranged incliningly tothefirst named horizontal spindle, each drill spindle having a'looselyencircling sleeve constrained against endwise movement relatively to itsspindle, and each sleeve having rack teeth thereon, and bearing andguiding means through which said sleeves are slidable, a horizontalshaft, mounted in an upper part of the machine, comprising a Copies ofthis patent may be obtained for five cents each, by addressing the-Commissioner of Patents,

shaft section which is parallel with the 101igitudinally arrangedhorizontal drill spindle, and a second shaft section, universal throughwhich the horizontal drill spindles 40 are endwise movable, chainsconnecting the sprocket-wheels on the sectionally formed shaft and thehorizontal drill spindle sprocket wheels, a'rock shaft 'having'anoperating handle and a pinion in mesh with the rack teeth of thevertical spindle sleeve,

pinions in mesh with the rack teeth of'the horizontal spindle sleeves,and driving connections between SalCljliOCkSl1 fllEt and the last namedpinions.

Signed by ine at Springfield, Mass, in

presence of two subscribing witnesses.

Witnesses:

G. R. DRISCOLL,

VVM. S. BELLoWs.

Washington, D. G.

ARTHUR L. Moons;

